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Finding the Fourth Proportional to 678,283.68, 929,807.52 and 672,011.04

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Solution

The fourth proportional to 678,283.68, 929,807.52 and 672,011.04 is: 921,208.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,283.68 : 929,807.52 = 672,011.04 : x
  2. Step 2: Convert to fraction form
    678,283.68/929,807.52 = 672,011.04/x
  3. Step 3: Cross multiply
    678,283.68x = 929,807.52 × 672,011.04
  4. Step 4: Simplify right side
    678,283.68x = 624,840,918,515.02
  5. Step 5: Solve for x
    x = 624,840,918,515.02/678,283.68
  6. Step 6: Final answer
    x = 921,208.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.